Arash Borzou, Mahmoud Kalbasi, Mehran Hoodaji, Majid Abdouss and Ahmad Mohammadi
Cadmium is known to be toxic for living organism even if it is present in low levels. This study deals with the use of the reactive poly (ethylene terephthalate) (PET) fibers for the removal of cadmium from aqueous solutions. In this study, PET was grafted with 2-hydroxy propyl methacrylate (2-HPMA) as a monomer in the presence of benzoyl peroxide (Bz2O2) as an initiator. Reactive fibers were used as a new adsorbent for the removal of Cd 2+ ions from aqueous solutions. The effects of pH, contact time, adsorbent dose and adsorbate concentration were studied. The best conditions for removal of Cd 2+ were determined (pH = 6.70, t=60 min, adsorbate concentration = 2.50 mg / l and Cd 2+ concentration = 120mg/L). Adsorption isotherms parameters of Cd2+ on grafted PET were studied in batch experiments. The highest correlation coefficient (R2) explaining adsorption data was observed for the Freundlich isotherm.
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